Multi-fixed cutting platform for laser cutting of I-shaped steel

Abstract

The invention discloses a multi-fixing cutting platform for laser cutting of I-shaped steel, and relates to the field of laser cutting, the multi-fixing cutting platform comprises a feeding machine for conveying the I-shaped steel and a frame body, clamping frames are arranged in the frame body and located at the upper and lower positions of the I-shaped steel, a plurality of fixing rods are arranged in the clamping frames, and the fixing ends of the plurality of fixing rods are attached to the surface of the I-shaped steel; a fixing assembly is arranged on the clamping frame, and the fixing assembly fixes all the fixing rods relative to the clamping frame after the fixing ends of all the fixing rods are attached to the surface of the I-shaped steel; an adapting assembly is arranged on the fixing rod, and the adapting assembly is used for driving the fixing rod to move relative to the clamping frame in the axial direction when the fixing rod is subjected to axial thrust; a combining assembly is arranged in the frame body and used for driving the clamping frames on the upper side and the lower side to synchronously move towards the positions close to each other. According to the I-shaped steel cutting device, the multiple fixing rods are matched for clamping, and high positioning precision and stability of I-shaped steel in the cutting process are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of laser cutting technology, specifically to a multi-fixed cutting platform for laser cutting of I-beams. Background Technology

[0002] In actual laser cutting operations, especially for profiles with irregular H-shaped cross-sections such as I-beams, achieving stable and precise fixation remains a challenge. Traditional fixing platforms often use V-blocks, side set screws, or simple upper and lower pressure plates for rigid clamping. This method has significant shortcomings: when the high-energy laser beam acts on the steel, it generates high-temperature molten metal droplets that splatter outwards. These molten metal droplets adhere to the surfaces near the cutting area of ​​the I-beam, such as the flanges and webs, and after cooling and solidifying, form hard and irregularly shaped protrusions (commonly known as slag or spatter). When faced with these randomly distributed, varying-sized metal spatter residues, the flat clamping surface of traditional rigid fixtures cannot effectively conform to them, resulting in the fixture body only contacting the workpiece surface at a few high points, leading to concentrated and uneven clamping force. This makes the workpiece prone to fretting, displacement, or even twisting during cutting or feeding movements, severely affecting the accuracy of subsequent cutting. Summary of the Invention

[0003] The purpose of this invention is to provide a multi-fixed cutting platform for laser cutting of I-beams, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a multi-fixed cutting platform for laser cutting of I-beams, comprising a feeder for transporting I-beams and a frame, wherein clamping frames are provided at both the upper and lower positions of the I-beams within the frame, and multiple fixing rods are provided within the clamping frames, wherein the fixing ends of the multiple fixing rods are all in contact with the surface of the I-beams;

[0005] The clamping frame is equipped with a fixing component. After all the fixing ends of the fixing rods are in contact with the surface of the I-beam, the fixing component fixes all the fixing rods relative to the clamping frame.

[0006] The fixed rod is provided with an adaptation component, which is used to drive the fixed rod to move relative to the clamping frame in the axial direction when the fixed rod is subjected to axial thrust.

[0007] The frame is equipped with a merging component, which is used to drive the clamping frames on the upper and lower sides to move synchronously toward each other.

[0008] Preferably, the fixing assembly includes multiple sets of clamping members disposed inside the clamping frame. Each set of clamping members includes two clamping plates arranged symmetrically front to back, and multiple sliding rods are provided between each set of clamping members. The number of sliding rods is equal to the number of fixing rods, and the multiple sliding rods are fixedly connected to each fixing rod respectively. The clamping frame is provided with a driving unit, which is used to drive the clamping members to clamp the multiple sliding rods.

[0009] Preferably, multiple sets of clamping members are arranged in a front-to-back manner within the clamping frame with equal spacing, and adjacent sets of clamping members are staggered vertically.

[0010] Preferably, the driving unit includes sliders fixed on the left and right sides of the clamping plate, the sliders being slidably connected to the clamping frame; a bidirectional lead screw is provided between two sliders on the same side of the two clamping plates, the two transmission parts of the bidirectional lead screw being threadedly connected to the two sliders respectively; multiple bidirectional lead screws on the same side at the top and bottom positions are coaxially fixedly connected, and the bidirectional lead screws on the front and rear sides are fixedly connected to the output shaft on the clamping frame.

[0011] Preferably, the adaptation component includes a spring sleeved on the slide rod, the slide rod passing through the clamping frame and being slidably connected to the clamping frame; one end of the spring is fixedly connected to the slide rod and the other end is fixedly connected to the clamping frame.

[0012] Preferably, a limiting plate is fixedly connected to the clamping frame near the I-beam, and the fixing rod passes through the limiting plate and is slidably connected to the limiting plate.

[0013] Preferably, the merging component includes multiple vertically arranged limiting rods fixed in the frame body, and the clamping frame is slidably connected to the multiple limiting rods at the same time; the clamping frame is provided with multiple cylinders, the cylinders are fixedly connected to the frame body and the cylinder extension end is fixedly connected to the clamping frame.

[0014] Preferably, the frame is annular in shape and a fixed frame is installed on the outside of the frame, and the frame and the fixed frame are rotatably connected; a motor is fixedly connected to the fixed frame, and a gear is fixedly connected to the front end of the motor output shaft; an external gear ring is fixedly connected to the frame, and the gear meshes with the external gear ring.

[0015] Preferably, a laser cutter for cutting I-beams is provided between the feeder and the frame.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention employs a clamping system comprised of multiple independent, axially movable fixed rods, coupled with a spring-driven adaptation component. This allows each fixed rod to independently expand and contract according to the actual surface conditions of the I-beam's flange or web during the closing process of the upper and lower clamping frames. When the ends of some fixed rods first contact surface protrusions such as molten metal spatter residue, the springs are compressed and the rods retract, while the other fixed rods continue to advance until they are in contact with the flat surface of the workpiece. Only after all fixed rod ends have made contact does the fixing component lock all sliding rods. This design enables the clamping system to actively "adapt" rather than "repel" surface spatter, distributing the concentrated clamping force across as many contact points as possible, achieving a balanced "area contact" effect. This effectively overcomes the problems of clamping misalignment and stress concentration caused by localized irregular protrusions such as molten metal droplet spatter residue, ensuring high positioning accuracy and stability of the I-beam during the cutting process.

[0018] 2. This invention designs a ring-shaped frame equipped with a clamping bracket that can rotate relative to a fixed frame and is driven by a motor, gears, and an external gear ring. This allows the laser cutter to rotate the workpiece after cutting one side of an I-beam, and simultaneously, the platform of this invention can drive the frame to rotate synchronously via a motor. This design ensures that the workpiece remains stably clamped by the adaptive clamping system throughout the entire rotation and face-changing process, eliminating the need for manual repositioning and clamping, thus automating continuous, multi-angle cutting. This not only significantly improves processing efficiency and safety but also completely avoids positioning errors caused by surface spatter leading to different contact points during repeated clamping, making it difficult to find the original reference point, and ensuring dimensional consistency and high precision in multi-faceted cutting. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention (where x, y, and z represent the front, right, and top directions, respectively).

[0020] Figure 2 This is a schematic diagram of the rear view structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the disassembled structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the disassembled structure of the frame in this invention;

[0023] Figure 5 This is a schematic diagram of the clamping frame in this invention;

[0024] Figure 6 This is a schematic diagram of the clamping frame from a second perspective in this invention;

[0025] Figure 7This is a cross-sectional view of the clamping frame in this invention;

[0026] Figure 8 This is a schematic diagram of the disassembled clamping plate in this invention;

[0027] Figure 9 This is a schematic diagram of the clamping plate in this invention;

[0028] Figure 10 This is a schematic diagram showing the state of multiple fixed rods clamping the I-beam in this invention.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1. Feeder; 2. Frame; 3. Clamping frame; 4. Fixing rod; 5. Clamping plate; 6. Slide rod; 7. Slider; 8. Two-way lead screw; 9. Spring; 10. Limiting plate; 11. Limiting rod; 12. Cylinder; 13. Fixing frame; 14. Motor; 15. Gear; 16. External gear ring; 17. Laser cutter. Detailed Implementation

[0031] Please see Figure 1-10 The present invention provides a technical solution: a multi-fixed cutting platform for laser cutting of I-beams, including a feeder 1 for transporting I-beams and a frame 2. The frame 2 is provided with clamping frames 3 at the upper and lower positions of the I-beams. The clamping frames 3 are provided with multiple fixing rods 4, and the fixing ends of the multiple fixing rods 4 are all in contact with the surface of the I-beams.

[0032] The clamping frame 3 is equipped with a fixing component. After all the fixing ends of the fixing rods 4 are in contact with the surface of the I-beam, the fixing component fixes all the fixing rods 4 relative to the clamping frame 3.

[0033] The fixed rod 4 is provided with an adaptation component, which is used to drive the fixed rod 4 to move relative to the clamping frame 3 in the axial direction when the fixed rod 4 is subjected to axial thrust.

[0034] The frame 2 is equipped with a merging component, which is used to drive the clamping frames 3 on the upper and lower sides to move synchronously toward each other.

[0035] During operation, the feeder 1 transports the I-beam forward to the designated position. The cut portion of the I-beam is then positioned between two clamping frames 3 within the frame 2. At this point, the merging assembly is activated, causing the clamping frames 3 on both the upper and lower sides to move simultaneously towards the I-beam. As the clamping frames 3 move, they also move multiple fixed rods 4 connected to them. When the multiple fixed rods 4 move to a position close to the surface of the I-beam, a small portion of the fixed rods 4 first come into contact with the protruding metal residue on the surface of the I-beam. As the merging assembly continues to drive the clamping frames 3 to move, the fixed rods 4 that have come into contact with the protruding metal residue on the surface of the I-beam cannot move any further. Under the action of the adapting assembly, this portion of the fixed rods 4 begins to move relative to the clamping frames 3, while the majority of the other fixed rods 4 continue to follow the clamping frames 3 to a position where they come into contact with the flat surface of the I-beam.

[0036] Once most of the fixing rods 4 are in contact with the flat surface of the I-beam, stop merging the assembly and start the fixing assembly. The fixing assembly can then fix all the fixing rods 4 relative to the clamping frame 3. At this time, the clamping frame 3 can precisely clamp the I-beam in a specific position through multiple fixing rods 4, thereby effectively improving the accuracy of laser cutting of the I-beam.

[0037] See Figure 7-9 As a further embodiment of the present invention, the fixing component includes multiple sets of clamping members disposed inside the clamping frame 3. Each set of clamping members includes two clamping plates 5 arranged symmetrically front to back, and multiple sliding rods 6 are provided between each set of clamping members. The number of sliding rods 6 is equal to the number of fixing rods 4, and the multiple sliding rods 6 are respectively fixedly connected to each fixing rod 4. The clamping frame 3 is provided with a driving unit, which is used to drive the clamping members to clamp the multiple sliding rods 6.

[0038] Multiple sets of clamping components are arranged in front and behind within the clamping frame 3 with equal spacing, and adjacent sets of clamping components are staggered vertically.

[0039] The drive unit includes sliders 7 fixed on the left and right sides of the clamping plate 5, and sliders 7 are slidably connected to the clamping frame 3; a bidirectional lead screw 8 is provided between the two sliders 7 on the same side of the two clamping plates 5, and the two transmission parts of the bidirectional lead screw 8 are respectively threaded to the two sliders 7; multiple bidirectional lead screws 8 on the same side at the upper and lower positions are coaxially fixedly connected, and the bidirectional lead screws 8 on the front and rear sides are fixedly connected to the output shaft on the clamping frame 3.

[0040] During operation, when it is necessary to fix the fixed rod 4 relative to the clamping frame 3, the motor built into the clamping frame 3 is started, which drives all the bidirectional lead screws 8 to rotate through the output shaft. When the bidirectional lead screws 8 rotate, they can drive the two clamping plates 5 connected to them to move towards each other at the same time. After the two clamping plates 5 move a certain distance, they can clamp the multiple sliding rods 6 located between the two clamping plates 5 at the same time. At this time, the multiple sliding rods 6 clamped by the two clamping plates 5 can no longer slide up and down. The fixed rod 4 connected to the sliding rod 6 is in a fixed state relative to the clamping frame 3, thus achieving the effect of clamping the I-beam.

[0041] See Figure 7-10 As a further embodiment of the present invention, the adapting component includes a spring 9 sleeved on the slide rod 6, the slide rod 6 passing through the clamping frame 3 and the slide rod 6 being slidably connected to the clamping frame 3; one end of the spring 9 is fixedly connected to the slide rod 6 and the other end is fixedly connected to the clamping frame 3;

[0042] A limiting plate 10 is fixedly connected to the clamping frame 3 near the I-beam, and a fixing rod 4 passes through the limiting plate 10 and is slidably connected to the limiting plate 10.

[0043] During operation, when the clamping frame 3 moves multiple fixed plates closer to the I-beam, a small portion of the fixed rods 4 come into contact with the protruding metal residue on the I-beam. This portion of the fixed rods 4 is then held in place by the protruding metal residue and moves relative to the clamping frame 3. At this time, the fixed rods 4 drive the sliding rods 6 connected to them to slide relative to the clamping frame 3, and the sliding rods 6 begin to compress the springs 9. After the clamping of the I-beam is released and the sliding rods 6 are released from their fixation relative to the clamping frame 3, the compressed springs 9 release their elasticity, which drives the fixed rods 4 to return to their original position. All the fixed ends of the fixed rods 4 are on the same plane.

[0044] See Figure 4-5 As a further embodiment of the present invention, the merging component includes a plurality of vertically arranged limiting rods 11 fixed in the frame 2, and the clamping frame 3 is simultaneously slidably connected to the plurality of limiting rods 11; the clamping frame 3 is provided with a plurality of cylinders 12, the cylinders 12 are fixedly connected to the frame 2 and the telescopic end of the cylinders 12 is fixedly connected to the clamping frame 3.

[0045] When it is necessary to clamp the I-beam during operation, the cylinder 12 on the clamping frame 3 can be activated to move the clamping frame 3 closer to the I-beam. During the movement of the clamping frame 3, the limiting rod 11 can limit the clamping frame 3, which can effectively ensure the clamping accuracy of the I-beam.

[0046] See Figure 3-4As a further embodiment of the present invention, the frame 2 is ring-shaped and a fixed frame 13 is installed on the outside of the frame 2, and the frame 2 and the fixed frame 13 are rotatably connected; a motor 14 is fixedly connected to the fixed frame 13, and a gear 15 is fixedly connected to the front end of the output shaft of the motor 14; an external gear ring 16 is fixedly connected to the frame 2, and the gear 15 meshes with the external gear ring 16.

[0047] A laser cutter 17 for cutting I-beams is provided between the feeder 1 and the frame 2;

[0048] When the laser cutter 17 is started to cut the I-beam, due to the special structural shape of the I-beam, the feeder 1 needs to drive the I-beam to rotate repeatedly to change the cutting surface during the cutting process. When the feeder 1 drives the I-beam to rotate, the starting motor 14 drives the gear 15 to rotate. The gear 15 drives the frame 2 to rotate synchronously with the I-beam through the external gear ring 16, which can effectively ensure the clamping effect and accuracy of the I-beam.

Claims

1. A multiple fixed cutting platform for laser cutting of I-beams, comprising a feeder (1) for feeding I-beams and a frame (2), characterized in that: The frame body (2) is provided with clamping frames (3) at the upper and lower positions of the I-shaped steel, and the clamping frames (3) are provided with a plurality of fixed rods (4), and the fixed ends of the plurality of fixed rods (4) are attached to the surface of the I-shaped steel; The clamping frame (3) is provided with a fixing assembly, and after the fixed ends of all the fixed rods (4) are attached to the surface of the I-shaped steel, the fixing assembly fixes all the fixed rods (4) relative to the clamping frame (3); The fixed rod (4) is provided with an adaptive assembly, which is used to drive the fixed rod (4) to move along the axial direction relative to the clamping frame (3) when the fixed rod (4) is subjected to an axial thrust; The frame body (2) is provided with a merging assembly, which is used to drive the clamping frames (3) on the upper and lower sides to move synchronously to the position close to each other.

2. The multiple fixed cutting platform for I-beam laser cutting according to claim 1, wherein: The fixing assembly comprises a plurality of clamping pieces arranged inside the clamping frame (3), one set of the clamping pieces comprises two front and rear symmetrically arranged clamping plates (5), and a plurality of slide rods (6) are arranged between each set of clamping pieces, the number of the slide rods (6) is equal to the number of the fixed rods (4), and the plurality of slide rods (6) are respectively fixedly connected with each fixed rod (4); the clamping frame (3) is provided with a driving unit, and the driving unit is used to drive the clamping pieces to clamp the plurality of slide rods (6).

3. The multiple fixed cutting platform for I-beam laser cutting according to claim 2, wherein: A plurality of sets of the clamping pieces are arranged in front and back in the clamping frame (3) and have equal spacing, and adjacent two sets of clamping pieces are distributed in up and down staggered positions.

4. The multiple fixed cutting platform for I-beam laser cutting according to claim 2, wherein: The driving unit comprises slide blocks (7) fixed on the left and right sides of the clamping plate (5), and the slide blocks (7) are slidably connected with the clamping frame (3); a bidirectional screw rod (8) is arranged between the two slide blocks (7) on the same side of the two clamping plates (5), and the two transmission parts of the bidirectional screw rod (8) are threadedly connected with the two slide blocks (7), respectively; a plurality of bidirectional screw rods (8) on the same side in up and down positions are coaxially fixedly connected, and the bidirectional screw rods (8) on the front and back sides are fixedly connected with the output shaft on the clamping frame (3).

5. The multiple fixed cutting platform for I-beam laser cutting according to claim 2, wherein: The adaptive assembly comprises a spring (9) sleeved on the slide rod (6), the slide rod (6) penetrates through the clamping frame (3), and the slide rod (6) is slidably connected with the clamping frame (3); one end of the spring (9) is fixedly connected with the slide rod (6), and the other end is fixedly connected with the clamping frame (3).

6. The multiple fixed cutting platform for I-beam laser cutting according to claim 1, wherein: The clamping frame (3) is fixedly connected with a limiting plate (10) at a position close to the I-shaped steel, the fixed rod (4) penetrates through the limiting plate (10) and is slidably connected with the limiting plate (10).

7. The multiple fixed cutting platform for I-beam laser cutting according to claim 1, wherein: The merging assembly comprises a plurality of vertically arranged limiting rods (11) fixed in the frame body (2), and the clamping frame (3) is slidably connected with the plurality of limiting rods (11); the clamping frame (3) is provided with a plurality of air cylinders (12), the air cylinders (12) are fixedly connected with the frame body (2), and the telescopic ends of the air cylinders (12) are fixedly connected with the clamping frame (3).

8. The multiple fixed cutting platform for I-beam laser cutting according to claim 1, wherein: The frame body (2) is annular in shape and a fixing frame (13) is mounted on the outer side of the frame body (2), the frame body (2) is rotationally connected with the fixing frame (13); a motor (14) is fixedly connected on the fixing frame (13), a gear (15) is fixedly connected on the front end of the output shaft of the motor (14); an outer gear ring (16) is fixedly connected on the frame body (2), the gear (15) is engaged with the outer gear ring (16).

9. The multiple fixed cutting platform for I-beam laser cutting according to claim 1, wherein: A laser cutter (17) for cutting I-shaped steel is arranged between the feeder (1) and the frame body (2).

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